CHA_FAN is a motherboard header for powering case fans via 4-pin or 3-pin connectors. Motherboards typically have 1-6 CHA_FAN headers alongside CPU FAN and OPT headers. 3-pin headers operate at maximum speed, controlled by BIOS or software. 4-pin headers enable direct RPM control through pulse width modulation
GPU hotspot is the warmest sensor on graphics board's die. Hotspot temperature is typically 30°C higher than average temperature. Modern GPUs have hundreds of temperature sensors on die
Most CPU fans run between 3,500-4,000 RPM. 1000 RPM is normal for non-intensive tasks. 2,000 RPM is considered normal at rest. 5,000 RPM is overkill for basic tasks
GPU temperatures typically range from 40°C to 90°C. GPU becomes too hot above 80°C. High temperatures can damage GPU and other components
GPU hotspot temperature should be between 80-95C. Maximum safe temperature varies by manufacturer. Hotspot temperature should be below 110C
Safe CPU temperature range is 40-70°C under normal workloads. Gaming temperatures should be between 65-85°C. Intel processors can reach up to 100°C under load. AMD processors typically run cooler at 95°C